Spatial Coherence Properties of One Dimensional Exciton-Polariton Condensates

Date

2014

Authors

Fischer, Julian
Savenko, Ivan
Fraser, Michael D.
Holzinger, S
Brodbeck, Sebastian
Kamp, Martin
Shelykh, I.A.
Schneider, C
Hofling, Sven

Journal Title

Journal ISSN

Volume Title

Publisher

American Physical Society

Abstract

In this work, we combine a systematic experimental investigation of the power- and temperature-dependent evolution of the spatial coherence function, g(1)(r), in a one dimensional exciton-polariton channel with a modern microscopic numerical theory based on a stochastic master equation approach. The spatial coherence function g(1)(r) is extracted via high-precision Michelson interferometry, which allows us to demonstrate that in the regime of nonresonant excitation, the dependence g(1)(r) reaches a saturation value with a plateau, which is determined by the intensity of the pump and effective temperature of the crystal lattice. The theory, which was extended to allow for treating incoherent excitation in a stochastic frame, matches the experimental data with good qualitative and quantitative agreement. This allows us to verify the prediction that the decay of the off-diagonal long-range order can be almost fully suppressed in one dimensional condensate systems.

Description

Keywords

Keywords: Excitons; Michelson interferometers; Phonons; Photons; Quantum theory; Effective temperature; Experimental investigations; Michelson interferometry; Non-resonant excitation; Quantitative agreement; Spatial coherence properties; Stochastic master equations

Citation

Source

Physical Review Letters

Type

Journal article

Book Title

Entity type

Access Statement

Open Access

License Rights

DOI

10.1103/PhysRevLett.113.203902

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